/******************************************************************************
*
* Module Name: dsopcode - Dispatcher support for regions and fields
*
*****************************************************************************/
/******************************************************************************
*
* 1. Copyright Notice
*
* Some or all of this work - Copyright (c) 1999 - 2020, Intel Corp.
* All rights reserved.
*
* 2. License
*
* 2.1. This is your license from Intel Corp. under its intellectual property
* rights. You may have additional license terms from the party that provided
* you this software, covering your right to use that party's intellectual
* property rights.
*
* 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
* copy of the source code appearing in this file ("Covered Code") an
* irrevocable, perpetual, worldwide license under Intel's copyrights in the
* base code distributed originally by Intel ("Original Intel Code") to copy,
* make derivatives, distribute, use and display any portion of the Covered
* Code in any form, with the right to sublicense such rights; and
*
* 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
* license (with the right to sublicense), under only those claims of Intel
* patents that are infringed by the Original Intel Code, to make, use, sell,
* offer to sell, and import the Covered Code and derivative works thereof
* solely to the minimum extent necessary to exercise the above copyright
* license, and in no event shall the patent license extend to any additions
* to or modifications of the Original Intel Code. No other license or right
* is granted directly or by implication, estoppel or otherwise;
*
* The above copyright and patent license is granted only if the following
* conditions are met:
*
* 3. Conditions
*
* 3.1. Redistribution of Source with Rights to Further Distribute Source.
* Redistribution of source code of any substantial portion of the Covered
* Code or modification with rights to further distribute source must include
* the above Copyright Notice, the above License, this list of Conditions,
* and the following Disclaimer and Export Compliance provision. In addition,
* Licensee must cause all Covered Code to which Licensee contributes to
* contain a file documenting the changes Licensee made to create that Covered
* Code and the date of any change. Licensee must include in that file the
* documentation of any changes made by any predecessor Licensee. Licensee
* must include a prominent statement that the modification is derived,
* directly or indirectly, from Original Intel Code.
*
* 3.2. Redistribution of Source with no Rights to Further Distribute Source.
* Redistribution of source code of any substantial portion of the Covered
* Code or modification without rights to further distribute source must
* include the following Disclaimer and Export Compliance provision in the
* documentation and/or other materials provided with distribution. In
* addition, Licensee may not authorize further sublicense of source of any
* portion of the Covered Code, and must include terms to the effect that the
* license from Licensee to its licensee is limited to the intellectual
* property embodied in the software Licensee provides to its licensee, and
* not to intellectual property embodied in modifications its licensee may
* make.
*
* 3.3. Redistribution of Executable. Redistribution in executable form of any
* substantial portion of the Covered Code or modification must reproduce the
* above Copyright Notice, and the following Disclaimer and Export Compliance
* provision in the documentation and/or other materials provided with the
* distribution.
*
* 3.4. Intel retains all right, title, and interest in and to the Original
* Intel Code.
*
* 3.5. Neither the name Intel nor any other trademark owned or controlled by
* Intel shall be used in advertising or otherwise to promote the sale, use or
* other dealings in products derived from or relating to the Covered Code
* without prior written authorization from Intel.
*
* 4. Disclaimer and Export Compliance
*
* 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
* HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
* IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
* INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
* UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
* IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
* PARTICULAR PURPOSE.
*
* 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
* OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
* COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
* SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
* CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
* HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
* SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
* LIMITED REMEDY.
*
* 4.3. Licensee shall not export, either directly or indirectly, any of this
* software or system incorporating such software without first obtaining any
* required license or other approval from the U. S. Department of Commerce or
* any other agency or department of the United States Government. In the
* event Licensee exports any such software from the United States or
* re-exports any such software from a foreign destination, Licensee shall
* ensure that the distribution and export/re-export of the software is in
* compliance with all laws, regulations, orders, or other restrictions of the
* U.S. Export Administration Regulations. Licensee agrees that neither it nor
* any of its subsidiaries will export/re-export any technical data, process,
* software, or service, directly or indirectly, to any country for which the
* United States government or any agency thereof requires an export license,
* other governmental approval, or letter of assurance, without first obtaining
* such license, approval or letter.
*
*****************************************************************************
*
* Alternatively, you may choose to be licensed under the terms of the
* following license:
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions, and the following disclaimer,
* without modification.
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
* substantially similar to the "NO WARRANTY" disclaimer below
* ("Disclaimer") and any redistribution must be conditioned upon
* including a substantially similar Disclaimer requirement for further
* binary redistribution.
* 3. Neither the names of the above-listed copyright holders nor the names
* of any contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Alternatively, you may choose to be licensed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*
*****************************************************************************/
#include <contrib/dev/acpica/include/acpi.h>
#include <contrib/dev/acpica/include/accommon.h>
#include <contrib/dev/acpica/include/acparser.h>
#include <contrib/dev/acpica/include/amlcode.h>
#include <contrib/dev/acpica/include/acdispat.h>
#include <contrib/dev/acpica/include/acinterp.h>
#include <contrib/dev/acpica/include/acnamesp.h>
#include <contrib/dev/acpica/include/acevents.h>
#include <contrib/dev/acpica/include/actables.h>
#define _COMPONENT ACPI_DISPATCHER
ACPI_MODULE_NAME ("dsopcode")
/* Local prototypes */
static ACPI_STATUS
AcpiDsInitBufferField (
UINT16 AmlOpcode,
ACPI_OPERAND_OBJECT *ObjDesc,
ACPI_OPERAND_OBJECT *BufferDesc,
ACPI_OPERAND_OBJECT *OffsetDesc,
ACPI_OPERAND_OBJECT *LengthDesc,
ACPI_OPERAND_OBJECT *ResultDesc);
/*******************************************************************************
*
* FUNCTION: AcpiDsInitializeRegion
*
* PARAMETERS: ObjHandle - Region namespace node
*
* RETURN: Status
*
* DESCRIPTION: Front end to EvInitializeRegion
*
******************************************************************************/
ACPI_STATUS
AcpiDsInitializeRegion (
ACPI_HANDLE ObjHandle)
{
ACPI_OPERAND_OBJECT *ObjDesc;
ACPI_STATUS Status;
ObjDesc = AcpiNsGetAttachedObject (ObjHandle);
/* Namespace is NOT locked */
Status = AcpiEvInitializeRegion (ObjDesc);
return (Status);
}
/*******************************************************************************
*
* FUNCTION: AcpiDsInitBufferField
*
* PARAMETERS: AmlOpcode - CreateXxxField
* ObjDesc - BufferField object
* BufferDesc - Host Buffer
* OffsetDesc - Offset into buffer
* LengthDesc - Length of field (CREATE_FIELD_OP only)
* ResultDesc - Where to store the result
*
* RETURN: Status
*
* DESCRIPTION: Perform actual initialization of a buffer field
*
******************************************************************************/
static ACPI_STATUS
AcpiDsInitBufferField (
UINT16 AmlOpcode,
ACPI_OPERAND_OBJECT *ObjDesc,
ACPI_OPERAND_OBJECT *BufferDesc,
ACPI_OPERAND_OBJECT *OffsetDesc,
ACPI_OPERAND_OBJECT *LengthDesc,
ACPI_OPERAND_OBJECT *ResultDesc)
{
UINT32 Offset;
UINT32 BitOffset;
UINT32 BitCount;
UINT8 FieldFlags;
ACPI_STATUS Status;
ACPI_FUNCTION_TRACE_PTR (DsInitBufferField, ObjDesc);
/* Host object must be a Buffer */
if (BufferDesc->Common.Type != ACPI_TYPE_BUFFER)
{
ACPI_ERROR ((AE_INFO,
"Target of Create Field is not a Buffer object - %s",
AcpiUtGetObjectTypeName (BufferDesc)));
Status = AE_AML_OPERAND_TYPE;
goto Cleanup;
}
/*
* The last parameter to all of these opcodes (ResultDesc) started
* out as a NameString, and should therefore now be a NS node
* after resolution in AcpiExResolveOperands().
*/
if (ACPI_GET_DESCRIPTOR_TYPE (ResultDesc) != ACPI_DESC_TYPE_NAMED)
{
ACPI_ERROR ((AE_INFO,
"(%s) destination not a NS Node [%s]",
AcpiPsGetOpcodeName (AmlOpcode),
AcpiUtGetDescriptorName (ResultDesc)));
Status = AE_AML_OPERAND_TYPE;
goto Cleanup;
}
Offset = (UINT32) OffsetDesc->Integer.Value;
/*
* Setup the Bit offsets and counts, according to the opcode
*/
switch (AmlOpcode)
{
case AML_CREATE_FIELD_OP:
/* Offset is in bits, count is in bits */
FieldFlags = AML_FIELD_ACCESS_BYTE;
BitOffset = Offset;
BitCount = (UINT32) LengthDesc->Integer.Value;
/* Must have a valid (>0) bit count */
if (BitCount == 0)
{
ACPI_BIOS_ERROR ((AE_INFO,
"Attempt to CreateField of length zero"));
Status = AE_AML_OPERAND_VALUE;
goto Cleanup;
}
break;
case AML_CREATE_BIT_FIELD_OP:
/* Offset is in bits, Field is one bit */
BitOffset = Offset;
BitCount = 1;
FieldFlags = AML_FIELD_ACCESS_BYTE;
break;
case AML_CREATE_BYTE_FIELD_OP:
/* Offset is in bytes, field is one byte */
BitOffset = 8 * Offset;
BitCount = 8;
FieldFlags = AML_FIELD_ACCESS_BYTE;
break;
case AML_CREATE_WORD_FIELD_OP:
/* Offset is in bytes, field is one word */
BitOffset = 8 * Offset;
BitCount = 16;
FieldFlags = AML_FIELD_ACCESS_WORD;
break;
case AML_CREATE_DWORD_FIELD_OP:
/* Offset is in bytes, field is one dword */
BitOffset = 8 * Offset;
BitCount = 32;
FieldFlags = AML_FIELD_ACCESS_DWORD;
break;
case AML_CREATE_QWORD_FIELD_OP:
/* Offset is in bytes, field is one qword */
BitOffset = 8 * Offset;
BitCount = 64;
FieldFlags = AML_FIELD_ACCESS_QWORD;
break;
default:
ACPI_ERROR ((AE_INFO,
"Unknown field creation opcode 0x%02X",
AmlOpcode));
Status = AE_AML_BAD_OPCODE;
goto Cleanup;
}
/* Entire field must fit within the current length of the buffer */
if ((BitOffset + BitCount) >
(8 * (UINT32) BufferDesc->Buffer.Length))
{
Status = AE_AML_BUFFER_LIMIT;
ACPI_BIOS_EXCEPTION ((AE_INFO, Status,
"Field [%4.4s] at bit offset/length %u/%u "
"exceeds size of target Buffer (%u bits)",
AcpiUtGetNodeName (ResultDesc), BitOffset, BitCount,
8 * (UINT32) BufferDesc->Buffer.Length));
goto Cleanup;
}
/*
* Initialize areas of the field object that are common to all fields
* For FieldFlags, use LOCK_RULE = 0 (NO_LOCK),
* UPDATE_RULE = 0 (UPDATE_PRESERVE)
*/
Status = AcpiExPrepCommonFieldObject (
ObjDesc, FieldFlags, 0, BitOffset, BitCount);
if (ACPI_FAILURE (Status))
{
goto Cleanup;
}
ObjDesc->BufferField.BufferObj = BufferDesc;
ObjDesc->BufferField.IsCreateField = AmlOpcode == AML_CREATE_FIELD_OP;
/* Reference count for BufferDesc inherits ObjDesc count */
BufferDesc->Common.ReferenceCount = (UINT16)
(BufferDesc->Common.ReferenceCount + ObjDesc->Common.ReferenceCount);
Cleanup:
/* Always delete the operands */
AcpiUtRemoveReference (OffsetDesc);
AcpiUtRemoveReference (BufferDesc);
if (AmlOpcode == AML_CREATE_FIELD_OP)
{
AcpiUtRemoveReference (LengthDesc);
}
/* On failure, delete the result descriptor */
if (ACPI_FAILURE (Status))
{
AcpiUtRemoveReference (ResultDesc); /* Result descriptor */
}
else
{
/* Now the address and length are valid for this BufferField */
ObjDesc->BufferField.Flags |= AOPOBJ_DATA_VALID;
}
return_ACPI_STATUS (Status);
}
/*******************************************************************************
*
* FUNCTION: AcpiDsEvalBufferFieldOperands
*
* PARAMETERS: WalkState - Current walk
* Op - A valid BufferField Op object
*
* RETURN: Status
*
* DESCRIPTION: Get BufferField Buffer and Index
* Called from AcpiDsExecEndOp during BufferField parse tree walk
*
******************************************************************************/
ACPI_STATUS
AcpiDsEvalBufferFieldOperands (
ACPI_WALK_STATE *WalkState,
ACPI_PARSE_OBJECT *Op)
{
ACPI_STATUS Status;
ACPI_OPERAND_OBJECT *ObjDesc;
ACPI_NAMESPACE_NODE *Node;
ACPI_PARSE_OBJECT *NextOp;
ACPI_FUNCTION_TRACE_PTR (DsEvalBufferFieldOperands, Op);
/*
* This is where we evaluate the address and length fields of the
* CreateXxxField declaration
*/
Node = Op->Common.Node;
/* NextOp points to the op that holds the Buffer */
NextOp = Op->Common.Value.Arg;
/* Evaluate/create the address and length operands */
Status = AcpiDsCreateOperands (WalkState, NextOp);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
ObjDesc = AcpiNsGetAttachedObject (Node);
if (!ObjDesc)
{
return_ACPI_STATUS (AE_NOT_EXIST);
}
/* Resolve the operands */
Status = AcpiExResolveOperands (
Op->Common.AmlOpcode, ACPI_WALK_OPERANDS, WalkState);
if (ACPI_FAILURE (Status))
{
ACPI_ERROR ((AE_INFO, "(%s) bad operand(s), status 0x%X",
AcpiPsGetOpcodeName (Op->Common.AmlOpcode), Status));
return_ACPI_STATUS (Status);
}
/* Initialize the Buffer Field */
if (Op->Common.AmlOpcode == AML_CREATE_FIELD_OP)
{
/* NOTE: Slightly different operands for this opcode */
Status = AcpiDsInitBufferField (Op->Common.AmlOpcode, ObjDesc,
WalkState->Operands[0], WalkState->Operands[1],
WalkState->Operands[2], WalkState->Operands[3]);
}
else
{
/* All other, CreateXxxField opcodes */
Status = AcpiDsInitBufferField (Op->Common.AmlOpcode, ObjDesc,
WalkState->Operands[0], WalkState->Operands[1],
NULL, WalkState->Operands[2]);
}
return_ACPI_STATUS (Status);
}
/*******************************************************************************
*
* FUNCTION: AcpiDsEvalRegionOperands
*
* PARAMETERS: WalkState - Current walk
* Op - A valid region Op object
*
* RETURN: Status
*
* DESCRIPTION: Get region address and length
* Called from AcpiDsExecEndOp during OpRegion parse tree walk
*
******************************************************************************/
ACPI_STATUS
AcpiDsEvalRegionOperands (
ACPI_WALK_STATE *WalkState,
ACPI_PARSE_OBJECT *Op)
{
ACPI_STATUS Status;
ACPI_OPERAND_OBJECT *ObjDesc;
ACPI_OPERAND_OBJECT *OperandDesc;
ACPI_NAMESPACE_NODE *Node;
ACPI_PARSE_OBJECT *NextOp;
ACPI_ADR_SPACE_TYPE SpaceId;
ACPI_FUNCTION_TRACE_PTR (DsEvalRegionOperands, Op);
/*
* This is where we evaluate the address and length fields of the
* OpRegion declaration
*/
Node = Op->Common.Node;
/* NextOp points to the op that holds the SpaceID */
NextOp = Op->Common.Value.Arg;
SpaceId = (ACPI_ADR_SPACE_TYPE) NextOp->Common.Value.Integer;
/* NextOp points to address op */
NextOp = NextOp->Common.Next;
/* Evaluate/create the address and length operands */
Status = AcpiDsCreateOperands (WalkState, NextOp);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
/* Resolve the length and address operands to numbers */
Status = AcpiExResolveOperands (
Op->Common.AmlOpcode, ACPI_WALK_OPERANDS, WalkState);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
ObjDesc = AcpiNsGetAttachedObject (Node);
if (!ObjDesc)
{
return_ACPI_STATUS (AE_NOT_EXIST);
}
/*
* Get the length operand and save it
* (at Top of stack)
*/
OperandDesc = WalkState->Operands[WalkState->NumOperands - 1];
ObjDesc->Region.Length = (UINT32) OperandDesc->Integer.Value;
AcpiUtRemoveReference (OperandDesc);
/* A zero-length operation region is unusable. Just warn */
if (!ObjDesc->Region.Length && (SpaceId < ACPI_NUM_PREDEFINED_REGIONS))
{
ACPI_WARNING ((AE_INFO,
"Operation Region [%4.4s] has zero length (SpaceId %X)",
Node->Name.Ascii, SpaceId));
}
/*
* Get the address and save it
* (at top of stack - 1)
*/
OperandDesc = WalkState->Operands[WalkState->NumOperands - 2];
ObjDesc->Region.Address = (ACPI_PHYSICAL_ADDRESS)
OperandDesc->Integer.Value;
AcpiUtRemoveReference (OperandDesc);
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "RgnObj %p Addr %8.8X%8.8X Len %X\n",
ObjDesc, ACPI_FORMAT_UINT64 (ObjDesc->Region.Address),
ObjDesc->Region.Length));
Status = AcpiUtAddAddressRange (ObjDesc->Region.SpaceId,
ObjDesc->Region.Address, ObjDesc->Region.Length, Node);
/* Now the address and length are valid for this opregion */
ObjDesc->Region.Flags |= AOPOBJ_DATA_VALID;
return_ACPI_STATUS (Status);
}
/*******************************************************************************
*
* FUNCTION: AcpiDsEvalTableRegionOperands
*
* PARAMETERS: WalkState - Current walk
* Op - A valid region Op object
*
* RETURN: Status
*
* DESCRIPTION: Get region address and length.
* Called from AcpiDsExecEndOp during DataTableRegion parse
* tree walk.
*
******************************************************************************/
ACPI_STATUS
AcpiDsEvalTableRegionOperands (
ACPI_WALK_STATE *WalkState,
ACPI_PARSE_OBJECT *Op)
{
ACPI_STATUS Status;
ACPI_OPERAND_OBJECT *ObjDesc;
ACPI_OPERAND_OBJECT **Operand;
ACPI_NAMESPACE_NODE *Node;
ACPI_PARSE_OBJECT *NextOp;
ACPI_TABLE_HEADER *Table;
UINT32 TableIndex;
ACPI_FUNCTION_TRACE_PTR (DsEvalTableRegionOperands, Op);
/*
* This is where we evaluate the Signature string, OemId string,
* and OemTableId string of the Data Table Region declaration
*/
Node = Op->Common.Node;
/* NextOp points to Signature string op */
NextOp = Op->Common.Value.Arg;
/*
* Evaluate/create the Signature string, OemId string,
* and OemTableId string operands
*/
Status = AcpiDsCreateOperands (WalkState, NextOp);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
Operand = &WalkState->Operands[0];
/*
* Resolve the Signature string, OemId string,
* and OemTableId string operands
*/
Status = AcpiExResolveOperands (
Op->Common.AmlOpcode, ACPI_WALK_OPERANDS, WalkState);
if (ACPI_FAILURE (Status))
{
goto Cleanup;
}
/* Find the ACPI table */
Status = AcpiTbFindTable (
Operand[0]->String.Pointer,
Operand[1]->String.Pointer,
Operand[2]->String.Pointer, &TableIndex);
if (ACPI_FAILURE (Status))
{
if (Status == AE_NOT_FOUND)
{
ACPI_ERROR ((AE_INFO,
"ACPI Table [%4.4s] OEM:(%s, %s) not found in RSDT/XSDT",
Operand[0]->String.Pointer,
Operand[1]->String.Pointer,
Operand[2]->String.Pointer));
}
goto Cleanup;
}
Status = AcpiGetTableByIndex (TableIndex, &Table);
if (ACPI_FAILURE (Status))
{
goto Cleanup;
}
ObjDesc = AcpiNsGetAttachedObject (Node);
if (!ObjDesc)
{
Status = AE_NOT_EXIST;
goto Cleanup;
}
ObjDesc->Region.Address = ACPI_PTR_TO_PHYSADDR (Table);
ObjDesc->Region.Length = Table->Length;
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "RgnObj %p Addr %8.8X%8.8X Len %X\n",
ObjDesc, ACPI_FORMAT_UINT64 (ObjDesc->Region.Address),
ObjDesc->Region.Length));
/* Now the address and length are valid for this opregion */
ObjDesc->Region.Flags |= AOPOBJ_DATA_VALID;
Cleanup:
AcpiUtRemoveReference (Operand[0]);
AcpiUtRemoveReference (Operand[1]);
AcpiUtRemoveReference (Operand[2]);
return_ACPI_STATUS (Status);
}
/*******************************************************************************
*
* FUNCTION: AcpiDsEvalDataObjectOperands
*
* PARAMETERS: WalkState - Current walk
* Op - A valid DataObject Op object
* ObjDesc - DataObject
*
* RETURN: Status
*
* DESCRIPTION: Get the operands and complete the following data object types:
* Buffer, Package.
*
******************************************************************************/
ACPI_STATUS
AcpiDsEvalDataObjectOperands (
ACPI_WALK_STATE *WalkState,
ACPI_PARSE_OBJECT *Op,
ACPI_OPERAND_OBJECT *ObjDesc)
{
ACPI_STATUS Status;
ACPI_OPERAND_OBJECT *ArgDesc;
UINT32 Length;
ACPI_FUNCTION_TRACE (DsEvalDataObjectOperands);
/* The first operand (for all of these data objects) is the length */
/*
* Set proper index into operand stack for AcpiDsObjStackPush
* invoked inside AcpiDsCreateOperand.
*/
WalkState->OperandIndex = WalkState->NumOperands;
/* Ignore if child is not valid */
if (!Op->Common.Value.Arg)
{
ACPI_ERROR ((AE_INFO,
"Missing child while evaluating opcode %4.4X, Op %p",
Op->Common.AmlOpcode, Op));
return_ACPI_STATUS (AE_OK);
}
Status = AcpiDsCreateOperand (WalkState, Op->Common.Value.Arg, 1);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
Status = AcpiExResolveOperands (WalkState->Opcode,
&(WalkState->Operands [WalkState->NumOperands -1]),
WalkState);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
/* Extract length operand */
ArgDesc = WalkState->Operands [WalkState->NumOperands - 1];
Length = (UINT32) ArgDesc->Integer.Value;
/* Cleanup for length operand */
Status = AcpiDsObjStackPop (1, WalkState);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
AcpiUtRemoveReference (ArgDesc);
/*
* Create the actual data object
*/
switch (Op->Common.AmlOpcode)
{
case AML_BUFFER_OP:
Status = AcpiDsBuildInternalBufferObj (
WalkState, Op, Length, &ObjDesc);
break;
case AML_PACKAGE_OP:
case AML_VARIABLE_PACKAGE_OP:
Status = AcpiDsBuildInternalPackageObj (
WalkState, Op, Length, &ObjDesc);
break;
default:
return_ACPI_STATUS (AE_AML_BAD_OPCODE);
}
if (ACPI_SUCCESS (Status))
{
/*
* Return the object in the WalkState, unless the parent is a package -
* in this case, the return object will be stored in the parse tree
* for the package.
*/
if ((!Op->Common.Parent) ||
((Op->Common.Parent->Common.AmlOpcode != AML_PACKAGE_OP) &&
(Op->Common.Parent->Common.AmlOpcode != AML_VARIABLE_PACKAGE_OP) &&
(Op->Common.Parent->Common.AmlOpcode != AML_NAME_OP)))
{
WalkState->ResultObj = ObjDesc;
}
}
return_ACPI_STATUS (Status);
}
/*******************************************************************************
*
* FUNCTION: AcpiDsEvalBankFieldOperands
*
* PARAMETERS: WalkState - Current walk
* Op - A valid BankField Op object
*
* RETURN: Status
*
* DESCRIPTION: Get BankField BankValue
* Called from AcpiDsExecEndOp during BankField parse tree walk
*
******************************************************************************/
ACPI_STATUS
AcpiDsEvalBankFieldOperands (
ACPI_WALK_STATE *WalkState,
ACPI_PARSE_OBJECT *Op)
{
ACPI_STATUS Status;
ACPI_OPERAND_OBJECT *ObjDesc;
ACPI_OPERAND_OBJECT *OperandDesc;
ACPI_NAMESPACE_NODE *Node;
ACPI_PARSE_OBJECT *NextOp;
ACPI_PARSE_OBJECT *Arg;
ACPI_FUNCTION_TRACE_PTR (DsEvalBankFieldOperands, Op);
/*
* This is where we evaluate the BankValue field of the
* BankField declaration
*/
/* NextOp points to the op that holds the Region */
NextOp = Op->Common.Value.Arg;
/* NextOp points to the op that holds the Bank Register */
NextOp = NextOp->Common.Next;
/* NextOp points to the op that holds the Bank Value */
NextOp = NextOp->Common.Next;
/*
* Set proper index into operand stack for AcpiDsObjStackPush
* invoked inside AcpiDsCreateOperand.
*
* We use WalkState->Operands[0] to store the evaluated BankValue
*/
WalkState->OperandIndex = 0;
Status = AcpiDsCreateOperand (WalkState, NextOp, 0);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
Status = AcpiExResolveToValue (&WalkState->Operands[0], WalkState);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
ACPI_DUMP_OPERANDS (ACPI_WALK_OPERANDS,
AcpiPsGetOpcodeName (Op->Common.AmlOpcode), 1);
/*
* Get the BankValue operand and save it
* (at Top of stack)
*/
OperandDesc = WalkState->Operands[0];
/* Arg points to the start Bank Field */
Arg = AcpiPsGetArg (Op, 4);
while (Arg)
{
/* Ignore OFFSET and ACCESSAS terms here */
if (Arg->Common.AmlOpcode == AML_INT_NAMEDFIELD_OP)
{
Node = Arg->Common.Node;
ObjDesc = AcpiNsGetAttachedObject (Node);
if (!ObjDesc)
{
return_ACPI_STATUS (AE_NOT_EXIST);
}
ObjDesc->BankField.Value = (UINT32) OperandDesc->Integer.Value;
}
/* Move to next field in the list */
Arg = Arg->Common.Next;
}
AcpiUtRemoveReference (OperandDesc);
return_ACPI_STATUS (Status);
}